KChartBarDiagram.h

/*
 * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
 *
 * This file is part of the KD Chart library.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef KCHARTBARDIAGRAM_H
#define KCHARTBARDIAGRAM_H
 
#include "KChartAbstractCartesianDiagram.h"
#include "KChartBarAttributes.h"
 
QT_BEGIN_NAMESPACE
class QPainter;
QT_END_NAMESPACE
 
namespace KChart {
 
    class ThreeDBarAttributes;
 
/**
 * @brief BarDiagram defines a common bar diagram.
 *
 * It provides different subtypes which are set using \a setType.
 */
class KCHART_EXPORT BarDiagram : public AbstractCartesianDiagram
{
    Q_OBJECT
 
    Q_DISABLE_COPY( BarDiagram )
 
    KCHART_DECLARE_DERIVED_DIAGRAM( BarDiagram, CartesianCoordinatePlane )
 
public:
    class BarDiagramType;
    friend class BarDiagramType;
 
    explicit BarDiagram(
        QWidget* parent = nullptr, CartesianCoordinatePlane* plane = nullptr );
    ~BarDiagram() override;
 
 
    /**
      * Creates an exact copy of this diagram.
      */
   virtual BarDiagram * clone() const;
    /**
    * Returns true if both diagrams have the same settings.
    */
    bool compare( const BarDiagram* other ) const;
 
    enum BarType { Normal,
                   Stacked,
                   Percent,
                   Rows ///< @deprecated Use BarDiagram::setOrientation() instead
                 };
 
 
    /**
      * Sets the bar diagram's type to \a type
      * \sa BarDiagram::BarType
      */
    void setType( const BarType type );
 
    /**
      * @return the type of the bar diagram
      */
    BarType type() const;
 
 
    /**
      * Sets the orientation of the bar diagram
      */
    void setOrientation( Qt::Orientation orientation );
 
    /**
      * @return the orientation of the bar diagram
      */
    Qt::Orientation orientation() const;
 
 
    /**
      * Sets the global bar attributes to \a ba
      */
    void setBarAttributes( const BarAttributes & a );
 
    /**
     * Sets the bar attributes of data set \a column to \a ba
     */
    void setBarAttributes( int column, const BarAttributes & a );
 
    /**
    * Sets the line attributes for the model index \a index to \a ba
    */
    void setBarAttributes( const QModelIndex & index, const BarAttributes & a );
 
    /**
      * @return the global bar attribute set
      */
    BarAttributes barAttributes() const;
 
    /**
     * @return the bar attribute set of data set \a column
     */
    BarAttributes barAttributes( int column ) const;
 
    /**
    * @return the bar attribute set of the model index \a index
    */
    BarAttributes barAttributes( const QModelIndex & index ) const;
 
 
    /**
      * Sets the global 3D bar attributes to \a threeDAttrs
      */
    void setThreeDBarAttributes( const ThreeDBarAttributes & a );
 
    /**
     * Sets the 3D bar attributes of dataset \a column to \a threeDAttrs
     */
    void setThreeDBarAttributes( int column, const ThreeDBarAttributes & a );
 
    /**
    * Sets the 3D line attributes of model index \a index to \a threeDAttrs
    */
    void setThreeDBarAttributes( const QModelIndex & index,
                                  const ThreeDBarAttributes & a );
 
    /**
      * @return the global 3D bar attributes
      */
    ThreeDBarAttributes threeDBarAttributes() const;
 
    /**
     * @return the 3D bar attributes of data set \a column
     */
    ThreeDBarAttributes threeDBarAttributes( int column ) const;
 
    /**
    * @return the 3D bar attributes of the model index \a index
    */
    ThreeDBarAttributes threeDBarAttributes( const QModelIndex & index ) const;
 
#if defined(Q_COMPILER_MANGLES_RETURN_TYPE)
    // implement AbstractCartesianDiagram
    /** \reimpl */
    const int numberOfAbscissaSegments () const;
    /** \reimpl */
    const int numberOfOrdinateSegments () const;
#else
    // implement AbstractCartesianDiagram
    /** \reimpl */
    int numberOfAbscissaSegments () const override;
    /** \reimpl */
    int numberOfOrdinateSegments () const override;
#endif
 
protected:
    void paint ( PaintContext* paintContext ) override;
 
public:
    void resize ( const QSizeF& area ) override;
 
protected:
    qreal threeDItemDepth( const QModelIndex & index ) const override;
    qreal threeDItemDepth( int column ) const override;
    /** \reimpl */
    const QPair<QPointF, QPointF> calculateDataBoundaries() const override;
    void paintEvent ( QPaintEvent* ) override;
    void resizeEvent ( QResizeEvent* ) override;
private:
 
    void calculateValueAndGapWidths( int rowCount, int colCount,
                                     qreal groupWidth,
                                     qreal& barWidth,
                                     qreal& spaceBetweenBars,
                                     qreal& spaceBetweenGroups );
}; // End of class BarDiagram
 
}
 
#endif // KCHARTBARDIAGRAM_H